Avira Free Anti-Virus prior 15.0.2004.1825 Self-Protection Feature code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.2$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Avira Free Anti-Virus (Anti-Malware Software). This issue affects some unknown functionality of the component Self-Protection Feature. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Avira Free-Antivirus before 15.0.2004.1825. The Self-Protection feature does not prohibit a write operation from an external process. Thus, code injection can be used to turn off this feature. After that, one can construct an event that will modify a file at a specific location, and pass this event to the driver, thereby defeating the anti-virus functionality.

The weakness was shared 04/09/2020 (Website). The advisory is shared at support.avira.com. The identification of this vulnerability is CVE-2020-8961 since 02/12/2020. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 15.0.2004.1825 eliminates this vulnerability.

The entry 148200 is related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
ATT&CK: T1059

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Free Anti-Virus 15.0.2004.1825

Timelineinfo

02/12/2020 🔍
04/09/2020 +57 days 🔍
04/11/2020 +2 days 🔍
10/09/2020 +181 days 🔍

Sourcesinfo

Advisory: support.avira.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-8961 (🔍)
See also: 🔍

Entryinfo

Created: 04/11/2020 08:31
Updated: 10/09/2020 13:59
Changes: 04/11/2020 08:31 (39), 04/11/2020 08:36 (18), 10/09/2020 13:59 (1)
Complete: 🔍

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